using Gremlin_BlazorServer.Data.DBClasses;
using Gremlin_BlazorServer.Data.EntityClasses;
using Microsoft.EntityFrameworkCore;
using System;
using System.Linq;

namespace Gremlin_BlazorServer.Services; 

public class GenericController {
	private readonly GremlinDb gremlinDb = new();

	public IList<TResult> GetAll<TResult>() where TResult : class, IMetadata {
		return gremlinDb.Set<TResult>().ToList();
	}

	public IList<TResult> GetAll<TResult>(string include) where TResult : class, IMetadata {
		return gremlinDb.Set<TResult>().Include(include).ToList();
	}

	public IList<TResult> GetAll<TResult>(Predicate<TResult> search) where TResult : class, IMetadata {
		return gremlinDb.Set<TResult>().AsEnumerable().Where(t => search(t)).ToList();
	}

	public IList<TResult> GetAll<TResult>(Predicate<TResult> search, string include) where TResult : class, IMetadata {
		return gremlinDb.Set<TResult>().Include(include).AsEnumerable().Where(t => search(t)).ToList();
	}

	public TResult? Get<TResult>(Predicate<TResult> search) where TResult : class, IMetadata {
		return gremlinDb.Set<TResult>().AsEnumerable().FirstOrDefault(t => search(t));
	}

	public TResult? Get<TResult>(Predicate<TResult> search, string include) where TResult : class, IMetadata {
		return gremlinDb.Set<TResult>().Include(include).AsEnumerable().FirstOrDefault(t => search(t));
	}

	public TResult GetLast<TResult>() where TResult : class, IMetadata {
		return gremlinDb.Set<TResult>().AsEnumerable().Last();
	}

	public bool Insert<T>(T entity) where T : class, IMetadata
	{
		try
		{
			gremlinDb.Set<T>().Add(entity);
			if (typeof(T) == typeof(Account))
			{
				Account account = entity as Account;
				System.Console.WriteLine($"Added {account.SapAccountNumber}:{account.AccountName} to database, try to save...");
			}
			return gremlinDb.SaveChanges() > 0;
		}
		catch (Exception exception)
		{
			Console.WriteLine(exception.InnerException);
			return false;
		}
	}

	public bool Insert<T>(List<T> entities) where T : class, IMetadata
	{
		try
		{
			gremlinDb.Set<T>().AddRange(entities);
			return gremlinDb.SaveChanges() > 0;
		}
		catch (Exception exception)
		{
			Console.WriteLine(exception.InnerException);
			return false;
		}
	}

	public bool IsExisting<T>(Predicate<T> search) where T : class, IMetadata
	{
		return gremlinDb.Set<T>().AsEnumerable().Any(t => search(t));
	}
}